Method of making folding boxes



Dec. 6, 1938. R. w. HOAG I METHOD OF MAKING FOLDING BOXES Filed Jan. 15,1937 Patented Dec. 6, .1938

UNITED STATES PATENT OFFICE Claims.

5 tion by doubling distended portions of the walls.

Another and important object of this invention is to provide a method bywhich boxes of the type described may be manufactured economically andat a high rate of speed.

The methodherein described is particularly adaptable to the productionof boxes, such as is herein disclosed, in fiat-folded condition byautomatic machinery.

With said objects in view, and others hereinafter explained, myinvention consists in the folding box and method of making the same,substantially as hereinafter described and claimed.

Of the accompanying drawing: Figure 1 is a plan view of the blank fromwhich the box may be formed.

Figure 2 is a plan view of the blank showing the condition thereof afterthe side margins have been folded against center areas of the blank.

Figure 3 is a plan view of the blank showing areas to which adhesive maybe applied in the method of producing the box in fiat-folded condition.

Figure 4 is a plan view of the blank showing the condition thereof afterthe end portions have been folded against the folded side margins.

Figure 5 is a plan view of the box after the walls thereof have beenraised to upright position.

Figure dis a front elevation of the box shown in Figure 5.

Figure 7 is an end elevation of the box shown in Figure 6. V

Figure 8 is a plan view of the box after the distended portions of thebox walls have been folded against the inside surfaces of the box walls.

Figure 9 is a front elevation of the box shown in Figure 8.

Figure 10 is an end elevation of the box shown in Figure 9.

Figure 11 is a perspective view of the completed box tilted so as toshow a portion of the interior thereof.

Figure 12 is a perspective view of the box showing the condition thereofbefore the distended portions of the box walls have been folded intoposition.

Referring to Figure 1 there is illustrated a scored box blank made ofsuitable material, such as'paper box-board, scored lines beingrepresented by dash lines H to l8 inclusive. The said scored lineseffect a division of the blank toform a bottom section I for the box,side wall sections 2 and 3, a pair of end walls 4 and 5, bellows foldsections '6 and 1, end wall extension sections 5 8 and 9, and side walllocking sections l0.

In the method of producing the box from the scored blank shown in Figure1, opposite side margins (Fig. 2) are folded on scored lines ll,

- I4 and I8 against center areas of the blank as 10 is shown by Figure2. Adhesive is'applied topredetermined areas I9 (Fig. 3) of the foldedside margins. The ends of the folded blank are then folded on scoredlines l2 and I3 against the upward facing surfaces of the folded sidewalls 2 15 and 3, to complete the box in flat-folded condition as isshown in Figure 4. It is obvious that when the folding just described iseffected, the sections 6 of the blank will become adhesively secured tothe corresponding ends of the side walls at areas l9 (Fig. 3).

When it is desired to set up the box for use the side walls 2 and 3 aresimply raised to an upright position. In so raising the side walls,sections I will automatically fold on scored lines [8 to positionsagainst the corresponding sections 6 which are secured to outsidesurfaces of the corresponding side walls. In raising the box walls toupright position, as abovedescribed, a bellows fold element will beformed at each end of the side walls, as is illustrated by Figures 5, 6,'7, and 12. To lock the walls of the box in upright position, end wallextension sections 8 and 8 together with the side wall locking sectionsIII, are folded inward, with the result that end wall extensions 8 and 9will be doubled against the inside surface of the corresponding endwall,-and side wall locking sections 10 will take positions against in--side end surfaces of the side walls 2 and 3.

It is apparent from Figures 8, 9, 10, and 11, 40 that the walls of thebox will be locked in upright position by folding the end wall extensionsections and side wall locking sections to positions againstinsidesurfaces of the box walls.

The scored lines II, M and I8, (Fig. 1) are shown as being in straightlines, as are scored lines l2 and I3. These scored lines are illustratedin this way for simplicity, but in practice it may be desirable, whenthe box blank is made of fairly thick material, to have some of theselines out of line with each other, or ataslight angle with each other,in order to compensate for the thickness of the material from which thebox blank is made and to permit folding the walls and wall extensions toflat condition and so that r the box may be set-up without binding orcramping.

I have shown in the method of producing the box herein described, thatside wall securing sections 6 should be adhesively secured to side walls2 and 3. In some instances where the walls of the box are very high itwill be found that the box is effective for many purposes withoutadhesively securing said side wall securing sections 6 to the adjacentside walls 2 and 3.

It may be found advisable in cases where a fairly thick box-blankmaterial is used to cut through the blank on the lines shown as scoredlines I3 shown in Figure 1.

Having described my invention, what I claim 1. The method of making abox of the character described, comprising; scoring and cutting apaper-board blank to form a bottom, a pair of side walls, a pair of endwalls, embryo bellows fold sections adjacent to the ends of the sidewalls and ends of the end walls, end wall extension sections, and sidewall locking sections; folding opposite side margins of the blank overupon center areas of the blank; applying adhesive to predetermined areasof the folded side margins; folding opposite ends ,of the blank uponmidportions of the folded side margins, raising the side walls and theend walls to upright positions, and folding the end wall extensionsections and the wall locking sections against corresponding insidesurfaces of the box walls.

2. The method of making a locked corner box from a blank having scoredlines extending iona gitudinally and scored lines extending transverselythereof to form a bottom, a pair of side walls, a pair of end walls, endwall extensions extending from the end walls, side wall locking sectionsadjacent to the end wall extensions and four embryo bellows foldsections adjacent to the ends of the side walls and ends of the endwalls, said embryo bellows fold sections each having a scored lineextending from the adjacent corner of the bottom section substantiallydiagonally across each embryo bellows fold section; comprising, foldingopposite side margins of the blank over upon center areas of the blank,applying adhesive to predetermined areas of the folded side margins,folding opposite ends of the blank upon mid-portions of the folded sidemargins, raising the side walls and the end walls to upright positions,and folding the end wall extensions and the side wall locking sectionsagainst corresponding inside surfaces of the box walls.

3. The method of making a locked corner box from a blank having scoredlines extending longitudinally and scored lines extending transverselythereof to form a bottom, a pair of side walls, a pair of end walls, endwall extensions extending from the end walls, side wall locking sectionsadjacent to the end wall extensions and four embryo bellows foldsections adjacent to the ends of the side walls and ends of the endwalls, said embryo bellows fold sections each having a scored lineextending from the adjacent corner of the bottom section substantiallydiagonally across each embryo bellows fold section; comprising, foldingopposite side margins of the blank over upon center areas of the blank,folding opposite ends of the blank upon mid-portions of the folded walllocking sections against corresponding inside surfaces of the box walls.

4. The method of making a locked corner box, comprising; scoring andcutting a paper-board blank to form a bottom, a pair of side walls, apair of end walls, embryo bellows fold sections adjacent to the ends ofthe side walls and ends of the end walls, end wall extension sections,and side wall locking sections; folding opposite side margins of theblank over upon center areas of the blank, folding opposite ends of theblank the folded side margins,. and the end walls to up-,

upon mid-portions of raising the side walls right positions, anddoubling the end wall extensions and the side wall locking sectionsagainst corresponding inside surfaces of the box walls.

5. The method of making a box of the character described, comprising;scoring and cutting a paper-board blank to form a bottom, a pair of sidewalls, a pair of end walls, embryo bellows fold elements adjacent to theends ofthe side walls and ends of the end sion sections, and side walllocking sections; foldof the blank over upon center areas of the blank,folding opposite ends of the blank upon mid-portions of the folded sidemargins, securing a section of each of the embryo bellows elements toadjacent portions of the corresponding side walls, raising the sidewalls and the end walls to upright positions, and doubling the end wallextensions and the side wall locking sections against correspondinginside surfaces of the box.

RODERICK WM. HOAG.

walls, end wall exten-'

